rust-design-patterns

## What problem does it solve? Rust design patterns and idioms help you compose safe, idiomatic Rust code that handles ownership, borrowing, and API design challenges.

## Core Features & Use Cases

• Borrowed Types (CRITICAL) patterns for flexible function inputs and efficient interfaces.
• mem::take, mem::replace, and struct decomposition to move data without clones.
• Builder and Newtype patterns for robust configuration and type safety.
• Default trait and struct update syntax for ergonomic defaults.
• Type State pattern and RAII guards for safe state machines and resource management.
• FFI patterns for safe interop with C and other languages.
• Anti-pattern awareness to avoid common mistakes such as over-cloning and Deref misuse.

### Quick Start Provide the most idiomatic Rust design-pattern recommendation for a given scenario and show a minimal example.